Mathematical Formulas
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GEDtestingservice.com | GED.com GED ® and GED Testing Service ® are registered trademarks of the American Council on Education. They may not be used or reproduced without the express written permission of ACE or GED Testing Service. The GED ® and GED Testing Service ® brands are administered by GED Testing Service LLC under license from the American Council on Education. Copyright © 2014 GED Testing Service LLC. All rights reserved. 2014 GED ® Test Resources Mathematics Formula Sheet & Explanation The 2014 GED ® Mathematical Reasoning test contains a formula sheet, which displays formulas relating to geometric measurement and certain algebra concepts. Formulas are provided to test- takers so that they may focus on application, rather than the memorization, of formulas. Area of a: square A = s 2 rectangle A = lw parallelogram A = bh triangle A = ! ! bh trapezoid A = ! ! h(b1 + b2) circle A = πr 2 Perimeter of a: square P = 4s rectangle P = 2l + 2w triangle P = s1 + s2 + s3 Circumference of a circle C = 2πr OR C = πd; π ≈ 3.14 Surface area and volume of a: rectangular prism SA = 2lw + 2lh + 2wh V = lwh right prism SA = ph + 2B V = Bh cylinder SA = 2πrh + 2πr 2 V = πr 2 h pyramid SA = ! ! ps + B V = ! ! Bh cone SA = πrs + πr 2 V = ! ! πr 2 h sphere SA = 4πr 2 V = ! ! πr 3 (p = perimeter of base with area B; π ≈ 3.14) Data mean mean is equal to the total of the values of a data set, divided by the number of elements in the data set median median is the middle value in an odd number of ordered values of a data set, or the mean of the two middle values in an even number of ordered values in a data set Algebra slope of a line ! = ! ! − ! ! ! ! − ! ! slope-intercept form of the equation of a line y = mx + b point-slope form of the equation of a line y – y1 = m(x – x1) standard form of a quadratic equation y = ax 2 + bx + c quadratic formula ! = −! ± ! ! − 4!" 2! Pythagorean theorem a 2 + b 2 = c 2 simple interest I = Prt (I = interest, P = principal, r = rate, t = time) distance formula d = rt total cost total cost = (number of units) × (price per unit)
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A list of mathematical formula
Transcript of Mathematical Formulas
GEDtestingservice.com | GED.comGED® and GED Testing Service® are registered trademarks of the American Council on Education. They may not be used or reproduced without the express written permission of ACE or GED Testing Service. The GED® and GED Testing Service® brands are administered by GED Testing Service LLC under license from the American Council on Education.Copyright © 2014 GED Testing Service LLC. All rights reserved.
2014 GED® Test Resources
Mathematics Formula Sheet & ExplanationThe 2014 GED® Mathematical Reasoning test contains a formula sheet, which displays formulas relating to geometric measurement and certain algebra concepts. Formulas are provided to test-takers so that they may focus on application, rather than the memorization, of formulas.Mathematics Formula Sheet
Area of a: square A = s2
rectangle A = lw parallelogram A = bh triangle A = !
! bh
trapezoid A = !! h(b1 + b2)
circle A = πr2
Perimeter of a: square P = 4s rectangle P = 2l + 2w triangle P = s1 + s2 + s3 Circumference of a circle C = 2πr OR C = πd; π ≈ 3.14
Surface area and volume of a: rectangular prism SA = 2lw + 2lh + 2wh V = lwh
right prism SA = ph + 2B V = Bh
cylinder SA = 2πrh + 2πr2 V = πr2h
pyramid SA = !! ps + B V = !
! Bh
cone SA = πrs + πr2 V = !! πr2h
sphere SA = 4πr2 V = !! πr3
(p = perimeter of base with area B; π ≈ 3.14) Data mean mean is equal to the total of the values of a data set, divided by
the number of elements in the data set
median median is the middle value in an odd number of ordered values of a data set, or the mean of the two middle values in an even number of ordered values in a data set
Algebra slope of a line ! =
!! − !!!! − !!
slope-intercept form of the equation of a line
y = mx + b
point-slope form of the equation of a line
y – y1 = m(x – x1)
standard form of a quadratic equation y = ax2 + bx + c
quadratic formula ! =
−! ± !! − 4!"2!
Pythagorean theorem a2 + b2 = c2
simple interest I = Prt (I = interest, P = principal, r = rate, t = time)
distance formula d = rt
total cost total cost = (number of units) × (price per unit)
